Improvement in machines for cutting files



l M. D. WHIPPLE.

File Cutter.

Patented April 1, 1862.

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UNITED STATES PATENT OFFICE.

MILTON D. WHIPPLE, OF CAMBRIDGE, MASSACHUSETTS, ASSIGNOR TO TI-IE VHIPPLE FILE MANUFACTURING COMPANY.

IMPROVEMENT IN MACHINES FOR CUTTING FILES.

Specication forming part of Letters Patent No. 34,865, dated April 1, 1862.

.To @ZZ whom, it may concern:

Be it known that I, MILTON D. WHIPPLE, of Cambridge, in the county of Middlesex and State of Massachusetts, have invented an Improved Machine for Cutting the Edges of Files, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, Inaking part of t-his specification, in which- Figure l is a view of the machine; Fig. 2, details to be referred to.

Files which have an edgesuch as sawfiles, or those with a triangular cross-section, and half-round files-before they have been cut on their several faces require to be cut or finished ou the edges. My present invention consists in a machine for doing this Work.

That others skilled in the art may understand and use Iny invention, I Willproceed to describe the manner in which I have carried it out.

In the said drawings, A is the frame or stand, from which rise the housings B in suitable bearings, in which run shafts C, which are placed in pairs one above the other, and are driven by suitable gears a from a pulley D, revolved by a cord h from a pulley E on the main or driving` shaft F. The upper row of shafts C have each their boxes c at one end made to slide up and down in the housing B, and are pressed down by springs d. Each shaft C carries a feed-roll G, which rolls are of a proper form to suit the kind of lle to be cut. Those shown here are for a threecornered file, the lower row being smooth on the face, and the upper row grooved, so that they will keep one of the edges of the iileblank uppermost and feed itthrough in this position. A halfround file would require both sets to be grooved. A pulley H on the shaft F carries a cord f, which passes over two inclined pulleys g h, hung in a heavy stand- `with a set of pins m.

ard I. Tothis standard is pivoted at t' a heavy arm K, (detached in Fig. 2,) which carries a pulley L, hung on a spindle passing through the arm at Z. The cord f drives this pulley, which is furnished on its rear end Another arm n is pivoted at 5 to the arm K. Itsinner end 6 intercepts the path of the pins m, so that as the pulley L is revolved in the direction of the arrow the outer end of the arm 'n is raised. A spring o, pressing against this arm, throws it down again when released from the pin m. A disk cutter p is secured to the outer end of the arm n. (The cutter is made in this form, so that it may be turned round when one portion of its edge has worn.) A curved guide-bar -r is secured to the arm K. Its end 7 is intended to rest on the edge of the tile-blank s,.Fig. l, which is to be cut, and keep the arm K at the proper height.

A rest or stop t is attached to the under side of the arm K, and extends out under the arm n to prevent its falling down when the cutter is not operating on a tile.

As the pulley L is revolved the pins on it strike the end of the arm 'n and vibrate it rapidly, the cutter p striking on the edge of the file-blank s, which is fed along under it until one edge is finished, when the file-blank is turned over and again passed through.

\Vhat I claim as my invention, and desire to secure by Letters Patent, is-

The above-described machine for cutting the edges of tile-blanks, consisting, essentially, of the arm K, with its guide-bar fr, the

vibrating arm n, with its cutter, the feed-rolls v G, and suitable gearing and mechanism for operating the parts substantially in the manner specified.

MILTON D. WHIPPLE. Witnesses: A

TIIos. R. RoAcH, EDMUND MAssoN. 

